Brick-burner.



siren YATES FRANK \V. HUITERVORTH,

OF INDIANAPOLIS, INDIANA BRlC --susnss.

SPECIFICATION forming part of Letters Patent No. 648,844, dated May 1, 1900. Application filed linguist 21, 2 99. Serial No. 727,972. (No model.)

To all whom it Magoo/warn.-

Be it known that I, FRANK W. BUTTER- won'rn, of Indianapolis, county of Marion, and State of Indiana, have invented a certain newanduseful Illicit-Burner; and I do hereby declare that the following isa full, clear, and

exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

This invention relates to a device for burning bricks with the gas at lowpressure. 'He'retofore, so far as I am aware, the gas has been piped into the ends of the furnace or arched chamber built in the old-fashioned manner. \Vith this arrangement it has been necessary to supply the gas. at a pressure at fifteen pounds to the square inch in order to force the volume of heat sufficiently far into the furnace-chamber to burn the bricks. With this arrangement too the bricks are unequally burned, as those nearer the end re- -ccive a much higher degree of heat than those near the middle of the kiln. The gaspipe could not be extended into the furnacechaniber, because it would be soon burned up.

My invention consists in providing a heatconduit under or beiow the arched chamber or furnace of the kiln, with a number of outlets therefrom to the said chamber distributed at intervals throughout the length of comparison with the means heretofore employed. Furthermore, the heat is more equally distributed, vhereby the bricks 111 all parts of the kiln are burned with uniformity, there being none over-burned or underburncd. Also by extending the furnacechaniber into the side walls the bricks adjacent to and in close proximity with said side walla-i will be properly burned.

The full nature of my invention will be nnderstood from the accompanying drawings and the description of one form of device enibodying my said invention.

In the. drawings, Figure l is a horizontal section of portion of a brick-kiln adjacent to one furnace'chamber thereof, showing a heat-conduit in dotted lines. .Fig. 2 is section on the line A A of Fig. 1, showing a portion 'of the side wall in elevation. Fig. 3 is a section on the line 13 13 of Fig. 1. Fig. i is a cross-section on. the line C d of Flg'xl. Fig. 5 is an elevation of a portion of the kiln, showing oncnnd of the heat-conduit partially closed In detail, 1 represents the side walls 'of a brick-kiln, and 2 the arch foriningthe furnace-chamber. This may be made in the old-fashioned manner, and the bricks are built around and above it in open-work to permit the free passage of heat upward. Un der said furnace-chamber I provide a heatconduit 3 of a permanent character nreferably embedded in the earth and formed preferably, of fire-brick or tile, with outlets i intervals in the upper side thereof, as shown in Fig. 1. The conduit extends under the side Walls, as shown in Fig. 1, and the first outlet or opening is in the portion that thus extends under the side Wall. Gas is supplied to said conduit from the gas-main 5 and mixer 6, that extends into the opening 7 in the side wall. In this manner gas and air are blown into the heat-conduit 3, where it is ignited, and the heat issues through the openings 4. into the fumace-chamber.

Means are provided for separately closing or partially closing the openings 4, so as to adjust the distribution of the heat more perfectly than would be done by the heat-conare sliding plates 8, which are moved by rods from outside the kiln.

The furnace-chambers are extended by me about half-way through the side walls and over the outermost outlet iof the hcat-conduit. Contracted openings 9 connect said furnace-chambers with the outside air. They are closed when desired. One end of the heat-conduit is partially closed also by means duit alone. The means shown for doing this of brick. is shown at it in his. 5. or other-' wiseiin order to regulate the draft and drive ends of said conduit are arranged to be partially closed, as shown in Fig. 5, or wholly open; as shown in Figs. 3 and 4. When desi-riedto direct the main body of the heat to olieend, the supply of gas through the pipe at that'felj d is considerablydiminished, and the opening into that end of the heating-conduit is likewise diminished or partially closed,

' as shown'iin Fig. 5, and the gas-supplyat the -period asldesired. In order to direct the front eli d of said conduit may be increased. Then; as" stated, the main body of the heat goes-toward the partially-closed end of the conduit, owing to the effect of the updraft through the bricks as laid in the kiln and to the partial closure of the opening of the heating-conduit: In this manner either end" may besubjected to an unusual heat for as long a main body of the heat toward the center of the kilmboth ends of the heating-conduit are left open; and the gas-supply topach end is the same. In this way it is seen that additional heat can be readily directed to either end 'or to the middle, as the quick and successful burning of the bricks may require.

' I do not wish to limit myinvention to the specific means I have herein shown for carry- What I claim as my invention, and desire to secure by Letters Patent, is"

1. The combination-with the furnace-charm her in a brick-kiln, of a heat-conduit in the bottom thereof throughout its entire length with outlets at intervals from saidconduit into said furnace-chamber. v

2. The combination withthe furnace-chamber in a brick-kiln, of a heat-conduit embedded in the earth under said furnace-cha nber throughout-its entire length and provided at intervals with outlets therefrom into saidchamber.

3. The combination with the side wall in a brick-kiln, of a furnace-chamber extending partially through the side wall, a heat-com duit in the bottom of said furnace-chamber with outlets at intervals therefrom into said furnace-chamber, onev outlet being in said extended portion of the furnace-chamber.

4. The combination with the furnace-chain her in a brick-kilnifqfa heat-conduit in the bottom thereof with outlets at intervals therefrom into said chamber, means for supplying gas and air to one end of said conduit, and means for'partially closing the other end of the said conduit to create a draft therethrough.

In witness whereof I have hereunto afixed mysignaturein the presence of the witnesses herein named.

FRANK \V. BUTTERWOR'III.

Witnesses: M. 0. Been,

V. H. Locxwoon; 

